<!DOCTYPE html>
<html lang='en'>

<head>
  <meta charset='UTF-8'>
  <meta http-equiv='X-UA-Compatible' content='IE=edge'>
  <meta name='viewport' content='width=device-width, initial-scale=1.0'>
  <title>Document</title>
  <script src='https://cdn.jsdelivr.net/npm/vue/dist/vue.js'></script>
</head>

<body>
  <div id='app'>
    <!-- v-text中的文字可以调换掉原本的内容 -->
    <h2 v-text="message1">{{message}}</h2>
    <h2 v-text="message1"></h2>
  </div>
  <script>
    const app = new Vue({
      el: '#app',
      data: {
        message: 'hello world',
        message1: 'hello cuifan'
      }
    })
  </script>
</body>

</html>